Nozzle for sand-pumps.



G. E. BATTISFORE.

NDZZLE FOR SAND PUMPS.

APPLICATION man SEPT-2.1914.

Patented Apr. 1, 1919..

Wibnemeo enonen E. BATTISFORE, on MARQUETTE, mcnrcmv.

NOZZLE FOR SAND-PUMPS.

Specification of Letters Patent.

Patented Apr. 1, 1919.

Application filed September 2, 1914. Serial No. 859,855.

To all whom it may concern:

Be it known that I, GEORGE E. BATTISFORE, a citizen of the United. States, residing at Marquette, in the county of Marquette, State of Michigan, have invented certain new and useful Improvements in Nozzles for Sand- Pumps; and I do hereby declare the following to bea full, clear, and, exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to suction pipes for dredging machines and it has for its object to provide an improved structure wherein there will not only be provided means for preventing the admission of solid bodies of a size that would clog the pipe, but wherein furthermore, the portion subject to wear by reason of the rapid striking of these smaller pieces thereagainst, is reinforced, the pipe and its reinforcement being so formed and correlated that the reinforcement may serve as a gravity means for sinking the inlet end of the suction pipe to the proper depth in the material operated upon.

With these and other objects and advantages in view, the invention consists in the novel construction and arrangement of parts as will be hereinafter more fullydescribed and claimed, and illustrated in the accompanying drawing, in which Figure 1 is a side elevation of my novel nozzle,

Fig. 2 is a longitudinal sectional view,

Fig. 3 is a cross sectional view on the line 33 of Fig. 1, and

Fig. 4 is a view of the end of the nozzle with the guard in place.

Referring more particularly to the drawing the numeral 5 designates a pipe conveying sand, connected with the usual pump and supported from a boom of a dredge 1n the usual manner, not shown. The end of the pipe 5 is provided with a flange 6 to which my novel nozzle is adapted to be secured.

My nozzle comprises a shell having its rear portion 7. formed cylindrical and provided with a flange 8 secured to the flange 6 by suitable bolts 9. At its forward end, the shell is formed larger and is shaped into a substantially rectangular shape as shown at 10, the corners being rounded as shown at 11.

In order that the sinking of the pipe 5 and the nozzle may be readily accomplished, I provide a weight 12, which is arcuate in shape and which fits snugly upon the upper portion of the cylindrical part 7 of the nozzle. Bolts 13 pass through the weight 12 and the cylindrical portion 7 of the nozzle for holding the Weight firmly in place. An eyebolt 14: is secured upon the weight 12 and is adapted to have the usual cable connected therewith for the support and control of the pipe and nozzle. The squared portion 10 of the nozzle is curved as shown and terminates in a straight edge 15 which forms the inlet.

In order that the nozzle may not be inserted within the sand to a sufficient degree to choke the device and to prevent stones, pieces of wood or the like from entering the device, I provide a guard for the inlet end of the nozzle. This guard is designated as a whole by the numeral 16 and comprises a plurality of transversely disposed strips 17 and a longitudinally disposed strip 18 riveted or otherwise secured upon the squared portion 10 of the nozzle. These strips are bent so as to form outwardly extending inclined portions 19, the longitudinal strip 18 having further a straight portion 20 parallel with'the edge 15. It will be seen that when the device is in use, the lodgment of stones in some of the spaces between the strips will not interfere with the operation of the pump and nozzle as the other spaces would still allow sufficient area for the suction of the device. Stones small enough to pass between the strips of the guard would not be of sufficient size to interfere with the pumping action.

With the construction and arrangement described, it will be noted that pieces of rock and other hard matter that are drawn up into the suction pipe will strike the upper wall of the suction pipe where it is curved and reinforced by the weight 12, and this part which is therefore subjected to the most rapid wear in use, is not only backed to oppose such indenting as results in embossing the outer surface, but holes that may be worn by friction of such matter in passing thereover, will be covered. It will further be understood that the formation of these holes occurs most rapidly when the metal is subjected to bombardment of these pieces of rock with the resultant drawing and consequent thinning of the metal. The more the inner surface is roughened by the formation of pockets most rapidly permitted when the metal is not backed up, the more rapid is the wear because of the working of sand and other small particles in s'uch' pockets.

Having thus described my invention, I 7''.

claim 1. The combination with a dredg ;ing inachine suction nozzle, the inlet end of which is curved along itsxaxis, of a sinking Weight fitted and secured snugly over the exterior surface of the nozzle inthe line of direct bombardment of rock sections entering throughf the}in1et end of the nozzle infuse, said \jve ght part-Way clrcumscrlblng' the e nozzle,

' 2. The combination with a dredging machine 'su'ction'nozzle, the inlet end of which Co lies*of'this patent'niaybe obtained for five'cen ts each, by

' Washington; I). G.

is curved along its axis, of a sinking-weight fitted and secured snugly over the exterior surface iofiithei nozzle iniithe line of direct bombardment of rock sections entering throughthe inlet end of the nozzle in use,

said Weight part-Way circumscribing the :nozzle,-and:hav1ng means for connectionof addressing the "Comihis'sione r "of Patents, 

